In Sourceforge, there is an OSX package which makes installing guitarix very easy. Unfortunately, it is a very old version (0.24-v6, which is from 2012 according to the changelog).

I am trying to build guitarix from source, but doing so on OSX is difficult because it has such bad package management. I'm trying to get all the dependencies taken care of, but it would be really nice to just have a .pkg of the most recent version!